Vectron Products - Oven Controlled Crystal Oscillators Archive - OCXO

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CO-705S Oven Controlled Crystal Oscillators (OCXO)

Features:

Frequencies from 1 to 25 MHz
Superior Aging Characteristics
Excellent Temperature Stabilities
SC/IT Cut Crystal
Low Phase Noise option

OCXOs - Basic Series

Premium Performance

Frequency

1-25 MHz with 5 MHz and 10 MHz standard
(available 32 kHz - 25 MHz with logic output)

Temperature Stability
(Temp. Range A)
+15°C to +35°C

CO-705SA39: ±3x10^-9
CO-705SA10: ±5x10^-10

(Temp. Range B)
0°C to +50°C

CO-705SB59: ±5x10^-9
CO-705SB19: ±1x10^-9

(Temp. Range D)
-20°C to +70°C

CO-705SD18: ±1x10^-8
CO-705SD39: ±3x10^-9

(Temp. Range G)
-55°C to +75°C

CO-705SG28: ±2x10^-8
CO-705SG59: ±5x10^-9

(Temp. Range F)
-55°C to +85°C

CO-705SF38: ±3x10^-8
CO-705SF18: ±1x10^-8

* N/A with "L2" or "N" option

Aging

5x10^-10/day (1X10^-7/year)
5x10^-8/year optional
at some frequencies
2x10^-8/year optional
at 5 MHz

** 1x10^-10/day models in 4-6.25 MHz range and at mutliples and some binary divisions of 4-6.25 MHz.

Restabilization at 25°
(freq. relative to that 2 hrs. after turn-on, following 24 hrs. off)

	Standard	15W Turn-on
1x10^-7	9 min.	3 min.
3X10^-8	12 min.	4 min.
1x10^-8	15 min.	5 min.

Output Level

>1 Vrms/ 50

(+ 13 dBm)
HCMOS/TTL optional

Supply Voltage (±5%)

+ 15 Vdc standard (12-24 Vdc optional);
+ 15 Vdc and 15 Vdc for HCMOS/TTL: Option "N":
+5 Vdc supply with HCMOS/TTL output available

Input Power

<5 Watts at turn-on

Frequency Adjustment

Mechanical adjustment settable to 1x10^-8.
Option "V": Voltage tuning

Size

1.5" x 1.5" x 2", solder header studs:
SMA Output Optional

Phase Noise (typical)
(with sinwave output
4-12 MHz)

Offset	Standard	Option L2
10 Hz	-115 dBc/Hz	-130 dBc/Hz
100 Hz	-140 dBc/Hz	-155 dBc/Hz
1 kHz	-145 dBc/Hz	-163 dBc/Hz
10 kHz	-148 dBc/Hz	-166 dBc/Hz
50 kHz	-150 dBc/Hz	-168 dBc/Hz

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CO-705S

Standard
(solder header)

Option W
(rf output connector)

Dimensions in inches.

Pinouts
Pin 1 2 3 4 5 6 *7	Function RF Output (N/C with Option W) Case 0 Volts, Case Supply (+) RF Return, Case VCXO Input VCXO Supply

*For option J, connect the +5 Vdc supply to pin 2. For HCMOS/TTL with a supply of +5Vdc only, connect the 5Vdc to both pins 2 and 4.

**Only for units with electronic tuning; otherwise, pin is No Connection. For fine tuning adjustment with the "V" option, connect one end of a 20k

wirewound potentiometer to pins 7 and 3, the other wiper arm to pin 6.